NEET2018Physics-Electrostatics

NEET 2018 Physics Motion in Electric Field MCQ Question

Type: MCQ-conceptual-Medium-Class 12

An electron falls from rest through a vertical distance 'h' in a uniform and vertically upward directed electric field 'E'. The direction of electric field is now reversed, keeping its magnitude the same. A proton is allowed to fall from rest in it through the same vertical distance 'h'. The time of fall of the electron, in comparison to the time of fall of the proton is

A

smaller.

B

5 times greater.

C

10 times greater.

D

equal.

Correct Answer

Option B

Detailed Explanation

The electron, being much lighter than the proton, will accelerate faster and thus take less time to fall the same distance.

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